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霉菌抑制剂、霉菌毒素结合剂和抗氧化剂

国外畜牧学（猪与禽） 2011年第6期31卷 7-9页

作者：黄玲 Jay Y.Jacela joel m.de rouchey mike D.Tokach Robert D.Goodband Jim L.Nelssen David G.Renter Steve S.Dritz 美国诺华动物保健公司美国堪萨斯州立大学动物科学与产业系美国堪萨斯州立大学诊断医学与病理学系

饲料原料如谷物易于霉菌的生长及霉菌毒素的污染。在日粮中添加霉菌抑制剂,如有机酸可防止霉菌生长,但是不能有效地预防霉菌毒素的污染。向日粮中添加霉菌毒素结合剂可防止猪通过采食受污染的饲料而摄入毒素。常见的霉菌毒素结合剂能够... 详细信息

饲料原料如谷物易于霉菌的生长及霉菌毒素的污染。在日粮中添加霉菌抑制剂,如有机酸可防止霉菌生长,但是不能有效地预防霉菌毒素的污染。向日粮中添加霉菌毒素结合剂可防止猪通过采食受污染的饲料而摄入毒素。常见的霉菌毒素结合剂能够有效地预防黄曲霉毒素的污染,而对其他霉菌毒素的作用很有限。在含有易于酸败(由于脂肪含量较高)的饲料原料的日粮中,添加抗氧化剂看来是可行的。

关键词：霉菌毒素结合剂霉菌抑制剂抗氧化剂饲料原料霉菌生长黄曲霉毒素脂肪含量污染

Quantum-mechanical effects in photoluminescence from thin crystalline gold films

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Light(Science & Applications) 2024年第4期13卷 783-794页

作者： Alan R.Bowman Alvaro Rodríguez Echarri Fatemeh Kiani Fadil Iyikanat Ted V.Tsoulos joel D.Cox Ravishankar Sundararaman F.Javier García de Abajo Giulia Tagliabue Laboratory of Nanoscience for Energy Technologies(LNET) STIÉcole Polytechnique Fédérale de Lausanne(EPFL)LausanneSwitzerland ICFO–Institut de Ciencies Fotoniques The Barcelona Institute of Science and TechnologyCastelldefels(Barcelona)Spain. mBI–max-Born-Institut BerlinGermany. POLImA–Center for Polariton-driven Light–matter Interactions University of Southern DenmarkOdense MDenmark. Danish Institute for Advanced Study University of Southern DenmarkOdense MDenmark. department of materials Science&Engineering Rensselaer Polytechnic InstituteTroyNYUSA. department of Physics Applied Physicsand AstronomyRensselaer Polytechnic InstituteTroyNYUSA. ICREA–Institucio Catalana de Recerca i Estudis Avancats BarcelonaSpain

Luminescence constitutes a unique source of insight into hot carrier processes in metals,including those in plasmonic nanostructures used for sensing and energy ***,being weak in nature,metal luminescence remains poorly understood,its microscopic origin strongly debated,and its potential for unraveling nanoscale carrier dynamics largely ***,we reveal quantum-mechanical effects in the luminescence emanating from thin monocrystalline gold ***,we present experimental evidence,supported by first-principles simulations,to demonstrate its photoluminescence origin(i.e.,radiative emission from electron/hole recombination)when exciting in the interband *** m.del allows us to identify changes to the measured gold luminescence due to quantum-mechanical effects as the gold film thickness is ***,such effects are observable in the luminescence signal from flakes up to 40 nm in thickness,associated with the out-of-plane discreteness of the electronic band structure near the Fermi *** qualitatively reproduce the observations with first-principles m.deling,thus establishing a unified description of luminescence in gold monocrystalline flakes and enabling its widespread application as a probe of carrier dynamics and light-matter interactions in this *** study paves the way for future explorations of hot carriers and charge-transfer dynamics in a multitude of material systems.

关键词： luminescence quantum crystalline

Size and crystallinity effect on the ultrafast optical response of chemically synthesized silver nanoparticles

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Journal of materiomics 2024年第3期10卷 594-600页

作者： Nadzeya Khinevich Domantas Peckus Asta Tamuleviciene Gerda Klimaite joel Henzie Tomas Tamulevicius Sigitas Tamulevicius Institute of materials Science of Kaunas University of Technology K.Barsausko St.59LT-51423KaunasLithuania department of Physics Kaunas University of TechnologyStudentu˛St.50LT-51368KaunasLithuania International Center for materials Nanoarchitectonics(WPI-mANA) National Institute for Materials Science(NIMS)Tsukuba305-0044Japan

The excited localized surface plasmon(LSP)in metallic nanoparticles is known to relax through several processes such as electron-electron scattering,electron-phonon coupling,and phonon-phonon *** the current research,the ultrafast electron-phonon(e-ph)coupling relaxation processes for different average sizes and crystallinity of chemically synthesized silver nanoparticles were evaluated utilizing transient absorption *** nanoparticle size and crystallinity of similar linear dimension polycrystalline spherical and monocrystalline cubic nanoparticles ranging from ca.30-60 nm was related to their electron relaxation time constants and revealed very different *** the monocrystalline nanocubes,the electron-phonon coupling was not dependent on the cube edge length,while for the polycrystalline nanospheres,it was linearly decreasing with *** demonstrate that the e-ph coupling time constant could be used to evaluate crystallinity and crystallite size in plasmonic metal nanoparticles when the size(surface area)of the nanoparticle is known.

关键词： Silver nanospheres Silver nanocubes Electron-phonon coupling Transient absorption spectroscopy Crystallite size Polycrystalline structure

Beyond cotton and polyester: An evaluation of emerging feedstocks and conversion methods for the future of fashion industry

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Journal of Bioresources and Bioproducts 2024年第2期9卷 130-159页

作者： Ryen m.Frazier Keren A.Vivas Ivana Azuaje Ramon Vera Alonzo Pifano Naycari Forfora Hasan Jameel Ericka Ford joel J.Pawlak Richard Venditti Ronalds Gonzalez department of Forest Biomaterials North Carolina State UniversityRaleighNC 27695USA department of Textile Engineering Chemistry and ScienceThe Nonwovens InstituteNorth Carolina State UniversityRaleighNC 27695USA

As the global population grows,the demand for textiles is increasing ***,this puts immense pressure on manufacturers to produce more *** synthetic fibers can be pro-duced cheaply,they have a negative impact on the *** the other hand,fibers from wool,sisal,fique,wood pulp(viscose),and man-m.de cellulose fibers(mmCFs)from cotton can-not alone meet the growing fiber demand without major stresses on land,water,and existing markets using these *** a greater emphasis on transparency and circular economy practices,there is a need to consider natural non-wood alternative sources for mmCFs to supple-ment other fiber ***,introducing new feedstocks with different compositions may require different biomass conversion ***,based on existing work,this review ad-dresses the technical feasibility of various alternative feedstocks for conversion to textile-grade ***,alternative feedstocks are introduced,and then conventional(dissolving pulp)and emerging(fibrillated cellulose and recycled material)conversion technologies are evaluated to help select the most suitable and promising processes for these emerging alternative sources of *** is important to note that for alternative feedstocks to be adopted on a meaningful scale,high biomass availability and proximity of conversion facilities are critical *** North America,soybean,wheat,rice,sorghum,and sugarcane residues are widely available and most suitable for conventional conversion through various dissolving pulp production methods(pre-hydrolysis kraft,acid sulfite,soda,SO2-ethanol-water,and potassium hydroxide)or by emerging cellulose fibrillation *** dissolving pulp conversion is well-established,fibrillated cel-lulose methods could be beneficial from cost,efficiency,and environmental ***,the authors strongly encourage more work in this growing research ***,conducting thorough cost and sustainability assessment

关键词： Non-wood Residue Regenerated cellulose Dissolving pulp man-m.de cellulose fiber Apparel textile

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

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Nanomanufacturing and metrology 2024年第1期7卷 75-85页

作者： joel Berkson Justin Hyatt Nathan Julicher Byeongjoon Jeong Isaac Pimienta Rachel Ball Wyatt Ellis Jason Voris Diego Torres‑Barajas Daewook Kim James C.Wyant College of Optical Sciences University of Arizona1630 E.University Blvd.TucsonAZ 85721USA department of Astronomy at Steward Observatory University of Arizona933 N Cherry Ave.TucsonAZ 85721USA

In 2019,the Event Horizon Telescope(EHT)released the first-ever image of a black hole event *** are now aiming for higher angular resolutions of distant targets,like black holes,to understand more about the fundamental laws of gravity that govern our *** achieve this higher resolution and increased sensitivity,larger radio telescopes are needed to operate at higher frequencies and in larger *** like the next-generation Very Large Array(ngVLA)and the Square-Kilometer Array(SKA)require building hundreds of telescopes with diameters greater than 10 ms over the next *** has a twofold *** telescope surfaces need to be more accurate to operate at higher frequencies,and the logistics involved in maintaining a radio telescope need to be simplified to support them properly in large *** of these problems can be solved with improved methods for surface metrology that are faster and more accurate with a higher *** leads to faster and more accurate panel alignment and,therefore,a more productive *** this paper,we present the use of binocular fringe projection profilometry as a solution to this problem and demonstrate it by aligning two panels on a 3-m radio telescope *** measurement takes only 10 min and directly delivers feedback on the tip,tilt,and piston of each panel to create the ideal reflector shape.

关键词： metrology Fringe projection profilometry Off-axis alignment Radio astronomy Radio antenna

Storylines of family medicine Ⅶ: family medicine across the lifespan

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Family medicine and Community Health 2024年第S3期12卷 61-69页

作者： William B Ventres Leslie A Stone Katharine C Barnard Sara G Shields mark J Nelson maria Verónica Svetaz Clara m Keegan joel J Heidelbaugh Paige B Beck Lucille marchand Family and Preventive medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA Family medicine and Community Health UMass Chan Medical SchoolWorcesterMassachusettsUSA John Peter Smith Hospital Family medicine Residency Fort WorthTexasUSA Family and Community medicine Hennepin HealthcareMinneapolisMinnesotaUSA Family medicine University of Vermont Larner College of MedicineBurlingtonVermontUSA Family medicine University of Michigan Medical SchoolAnn ArborMichiganUSA Family medicine and Community Health University of Wisconsin-Madison School of Medicine and Public HealthMadisonWisconsinUSA

Storylines of Family medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅶ:family medicine across the lifespan’,authors address the following themes:‘Family medicine maternity care’,‘Seeing children as patients brings joy to work’,‘Family medicine and the care of adolescents’,‘Reproductive healthcare across the lifespan’,‘men’s health’,‘Care of older adults’,and‘Being with dying’.may readers appreciate the range of family medicine in these essays.

关键词： life illustration family